Summary about table upgrade defeat

Hi,
I hope this summary is useful for our OWB guru here who is going to upgrade tables in PROD environment.
1. Deploy table with action of 'Upgrade' can only be completed through GUI rather than OMBPlus.
This is a known limit of OWB.
2. Deploy to File doesn't work (a potential bug, I guess). (Igor, are still looking into this?)
If you are tring to workaround for #1 above by generating script via 'deploy to file', you'll find there is no upgrade scripts but create scripts.
3. Never try to upgrade more than one table via GUI Deployment Manager because it shows 'Failed' but it's actuall successful, which will scare your DBA who is responsible for the deployment. (Igor already open a bug in metalink)
If you have 30 tables to upgrade, the best way is to deploy those in 30 times. No kidding.
4.Must be careful to upgrade tables like this: Drop a primary key as OWB is too smart.
Case: One table loading failed because data violate the primary key as it's actually duplicate in that column.
Action: Drop the primary and then deploy the table by upgrade. Deploy is successful but the loading will be failed.
Cause: The generated scripts first try to drop the index which was created with the primary key. Then it drop the primary key. So far so good. Next, it try to create a Unique Index AGAIN, on the same column, which resulted in failure on INSERT DUPLICATE VALUES in the later loading. Is that OWB too smart?
We report this TAR on Meta Link at early Oct. but still on Research.
Workaround: Manually drop the index after deployment and then start loading.
5.Must be careful to upgrade tables like this: Add columns in a table when a.) newly added in column will be part of the primary key, and b.) there are child tables referenced to this table.
As same as #4, OWB will first drop the FK for all the child tables, but it will add those FK back with as same defenition as before, which will surely fail you upgrading for non-matched primary key.
Workaround: Manually drop the related FK before deployment.
I opened a TAR about this on metalink two weeks ago. It's still on research by the way. Thanks Igro and Jean and other experties in this group, who always give much quicker solution and answer than metalink.
DW project is always in incrementally chaned status from release to release. Fairly speaking, OWB is very good in change management, flexible location, etc... However, something like this sort of defeat really make our developers panic. Looking forward seeing these fixed in Paris version.
Regards,
Daming

Hi Jean,
Thanks for your explain.
What I'm tring very hard to do is to deploy 'upgraded tables' by scripts instead of by GUI.
However, 'deploy' via SQL scripts generated by OWB is not the solution I'm looking for because it bypass the OWB deployment mechanism and nothing I can see from the audit browser. The senario is that only DBA has access on Production environment to do the deployment and I can see the deploy status adn execution after that through Audit Browser.
That's why I was trying to 'deploy to file' and then deploy from file in OMBPlus which didn't work for me. Please see detail informatin about this in the URL:
Re: Deploy from File for table Upgrade
I really appreciate if you can point out me some approach to reach this goal as my next version realease date is coming soon.
Thanks,
Daming

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